/ Dictionary / Index S sphingosine: Meaning and Definition of Find definitions for: sphin•go•sine Pronunciation: (sfing'gu-sēn", -sin), [key] — n. Biochem. a basic unsaturated amino alcohol, CH(OH)NH, produced by the hydrolysis of sphingomyelin or gangliosides. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sphingomyelin sphinx Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language